Lining launders



a. MONRATH.

L'INING LAUNDERS. APPLICATION FILED-JULY 22. 1919. 1 36,6 Patented Feb. 15, 1921 NV\ 1% O AW In 7 HWWN -GUSTAV MONRATH, on NEW YORK, N. Y., AssIsNoR, BY mEsNE ASSIGNMENTS, mo

THE BARBER ASPHALT PAVING comPANY, or PHILADELPHIA, PENNSYL- vANIA, A CORPORATION or WEST VIRGINIA.

LINING LAUNDRRs.

ease Specification of Letters Patent.

Patented Feb. 115, 1921.

Application filed July 22, 1919. Serial No. 312,475.

7 '0 all whom it may concern Be it known that I, GUSTAV Mo R 'rII, a. citizen of the United States, residing at New York city, in the county of New York,

lowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to the lining of receptacles for liquid, such, for example, as launders, canals, tanks, and the like, and has for its object the provision of an 1mproved lining of asphalt mastic materlal for the same.

In many metallurgical and chemical plants corrosive or hot liquors are frequently confined in or handled through tanks, launders, canals, and the like, WlllCh are most conveniently built of wood or concrete. These receptacles must ordinarily be lined with appropriate material adapted to withstand the corrosive or otherwise deleterious action of the li uors. Asphalt mastic compositions have found suitable for, the linings of such receptacles, particularly where acid or hot liquors are being handled. Where the receptacles are made of green woodor of concrete which cannot be given time to prop.- erly dry, difficulties are encountered in satisfactorily attaching an asphalt mastic llning thereto.

The present invention contemplates an improved lining construction of asphalt mastic material for such receptacles, and in particular for receptacles made of green wood or of concrete that cannot be given time to dry properly. The novel features of the invention which I believe to be patentable are definitely set forth in the appended claims. These features together with the construction of'liquid-containin'g receptacles embodying the same will be understood from the following description eretofore been tion of an asphalt mastic block or slab of the lining of the launder; I

F g. 3 is a sectional view of a concrete tank having an asphalt mastic lining embodying the invention; and

Fig. 4 is a perspective view partly in section illustrating the mode of making the asphalt mastic blocks or of the tank.

The launder of Fig. 1 has an outer structure or frame 5 of wood, such, for example, as green or imperfectly seasoned Wood. In accordance with the present invention, the wooden frame 5 is provided with an acidproof lining made up of blocks or slabs 6 of asphalt mastic material. The slabs 6 are of a size suitable for the work in hand and are from .g inch to 1% inches in thickness. A reinforcement 71- of expanded metal, or other suitable reinforcing agent, is embedded in each slab. The slabs may be made in any approprlate manner, as, for example, by pourlng the asphalt mastic material, heated to' a sufiiciently high temperature to secure the desired fluidity for casting, into a mold or form of suitable dimensions.

The asphalt mastic slabs 7 are attached and secured to the sides of the wooden frame 5 by screws 8 countersunk in the slabs with their heads covered with hot mastic. In Fig. 1 of the drawings I have indicated the slabs 7 similarly secured to the bottom of the wooden frame 5', but this is not necessary, since the bottom lining will remain in place without the screws 8. The joints between adjacent slabs and between the slabs and the sides and the bottom of duce a slab of the desired size, is placed horizontally on the ground. The bottom of the form 15 is covered with a thin layer of crushed stone, of about 3 inch mesh. The asphalt mastic material, heated to a sufiiciently high temperature to secure the deslabs of the lining the tank 10, a thin coat-of cement mortar 14 is spread over the back of the slabs and the slabs are pressed against the concrete. The joints between the -slabs of the side wall lining of the tank are cemented with hot mastic. Similarly, the joints between adja cent slabs and between the slabs and the bottom of the concrete tank are cemented with hot mastic.

From the foregoing description it will be evident that the as halt mastic lining, made up of blocks or s abs, is securely attached to the side walls of the receptacle. The back ofclean crushed stone partly embedded'in the, mastic provides a surface of suitable character for cementing the asphalt -mastic slab to the concrete by means of a cement the asphalt mastic slabs found satisfactory for receptacles made of green wood or concrete that canmortar. As previously mentioned, the attaching means of the invention for securing to the receptacle havebeen not be given time to properly dry, thus enabling the use of green wood and concrete under conditions which have heretofore been considered not conducive or satisfactory for the proper lining thereof with asphalt mastic material. The reinforcing member embedded in the slabs increases the durability of the lining, and prevents bulging and other distortion of the asphalt mastic slabs as the result of softening from the effects of hot liquors, or as the result of other causes.

I claim:

1. A lining slab for liquid receptacles comprising asphalt mastic and a backing of crushed stone partlyembedded in the mastic.

2. A lining slab for liquid receptacles comprising asphalt mastic material, a reinforcing element therein and a backing of crushed stone partly embedded in the mastic.

3. In a concretefreceptacle for liquids, a lining made up of slabs of asphalt mastic material having a back of crushed stone partly embedded in the mastic, material, and a coating of cement mortar for cementing the backs of the slabs to the side walls of the concrete receptacle; substantially as described.

In testimony whereof I afiix m signature.

GUSTAV MO BATH. 

